Pulling machine



Aug-141 1923.

J. MARTINSON PULLING MACHINE Filed May 22. 1922. 2 #Sheets-Sheet 1 J. MARTHNSQN PULLI NG MACHINE Filed May 22, 1922 2 Sheets-Sheet 2 (Mi/wanted citizen of wand 5 portion Patented Aug id, 1923. 7

JOHN men'rmscn, on

Application filed May T 0 all whom fl msy-concern:

:Be it known that I, Jenn Mantrinsori, a c United States, residing at Duluthin the countylof St.-Louis and State e'l Min "eta, have invented certain ,new

and useful Improvements in. Pulling him chines, of which the following is a specification, reference being had therein to the accompanying drawing; 7

This invention relates :to pulling machines and has special reference toone particularly designed for the pulling of stumps.

The principal object isto provideva stump pullerof las light and convenient a structure as possiblein :keeping with the maximum strength of the mac line and one that may be conveniently transported from place to place manually. V

Other objects and advantages of the invention will;v appear in the further description there-0f. V

Referring to the accompanying drawings" forming part of this z'application in which like reference ch'aracters indicate-like parts Figure l isa? side elevation of a completely assembled puller embodying the invention,

Eigure 2 is a top plan View Ofthesame,

Figure 3 is a vertical-sectional View through the -w1nd1ng-drum shaft,

The device comprrsesalportable structure .designedvto be conveniently moved about:

. from place to place by handgrt be nglprefe'rab-ly-supported upon three wheels 1 somewhat 35 i'nthe form of a wheelbarrow, except that the 'rearmost wheels at-are of castor like form so as to readily accommodate themselves to the lateral ,aswell as forward draft of the machine; the'front wheel "5 being much larger and'of any desiredconstruction.

' llhemain body portion is preferably of CEtSiLIRGbEIl i and comprises the generally 7 :V-

uShillQEdhorizontally disposed portion 1,

Within the rearmost spaced ends of; whichis .securely bolted the upright inverted U- shaped leg portion 2,:the uniting bolts'or 3. This leg rivets thereof being shown-at isv preferablyslightly inclined as showninthe drawing, the uppermost end being forward of the lower terminations,

and v the upper end extends approximately one-halfthe.distance above the body portion .;2that the legs eiitendrbelow the same.

A shaft 6 extends transverse the rearrnost .end of the bodyportion and "union with the 7 leg ,portion; the same being freely rotatable form of suitable crank block is being used.

intermediate or the .drum about which the -usually three or four turns, the free end be pinion 20 is fixed DULUTH, lIINBTESQTA.

Permits MACHINE.

1922.- serial'li o. 562,572.

within and projecting eyond th'esides of themachine for optional. engagement by any for ope-i g by hand, or otherpower imparting device.

The extreme forward end of the body portion 1 terminates inan engaging loop 7 in which a hook 5) may be'engaged for=as sistance in transporting the machine, er for the enu of the pulling line when a hatch Just'bacl; of saidloop a depending arm 8 is attached in any desired manner and in the lowerend (if-which piyotally mounted the forward wheel 5,

as at 1(). Upon the opposite side of the wheel 5 is a double depending member 11, it being of l-shape and attachedas with he bolt 12, the lower spaced terminations being mounted upon the axle'lll of the wheel 5 latter and one of the handles Then-cubic member 11 acts as a side support for the wheel and handles opposite to the dependingmember 8 21s well as a supportfor the two rollers or sheaves A- and 15, intermediate ofwhichthe pulling line 16 1S payed,'wh1ch when drawn taut in the act of pulling tends to raise the front end of the puller from theground.

There are two handles 13 their free -man ually engaged enos being spaced sufficiently far apart to provideeasymanipulation.

About the shaft (3 at th-erearcf the device is mounted a combined worm wheel and drum, theworm being indicated at l7 and the drum 18. This forms the pulling line 16 :is payed,

ing led out forwardly of the machine portlon of the line allel 'ith the incom'n through automatically =controlled means heroine 'ter described. The free end of the line showniat 19, thehpulling portion of the line being indicated at 16. This combina'tion drum and worm wheelis leosely -mounted about "the crank shaft 6, and, ad-

jacent one end of the latter, a spur gear or to said shaft, "it 'i'ncshing i the largergear 21 fixed upon the crank sham-2:2 spaced forwardly of the shaft Ga'nd rotatablewithin the body por-tionl. Centrallyiuponthe shaft 22 i's fixcd a beveled gear 28 meshing with a like beveled gear 24 on; the inclined worm-shaft 25L-which is rotatably carried within th l-liCllllBCl inverted til-shaped frame 26 which is pivotally mounted upon the shaft22 upon either side of the gear 28. Upon the shaft 25 and within the frame 26 is mounted the worm 27 which normally meshes with the worm wheel 17 and imparts motion and power thereto when the worm is driven by the rotation of the shaft 22.

The upper end of the frame 26 is rounded or provided with a hub like projection 28 which is engaged within the keeper 29 p1v-.

oted at 30 within suitable brackets 31 extending upwardly from the upper end of the leg portion 2. The free end of this keeper is held normally in engagement with the of the body portion 1 and in close juxtapogagement of the worm from the wheel is 'sition to the shaft 22. When quick disendesired it is seen that the free end of the frame 26 may be raised and tipped for- 'wardly on its pivotal support which is the shaft 22 after first moving in the opposite direction the free end of the keeper 29 so as to free the upper end of the frame 26 and when the frame 26 is held in this raised position and the keeper allowed to assume its normal position the hub portion 28 of the frame 26 will be above the projectinglug 35 on said keeper and the worm thus held from engagement with the worm wheel during such times for example as the unwinding of the pulling line or the initial placing of same about the drum 18. For reengaging the worm with the wheel all that is necessary is to raise the free end of the keeper 29 when the worm will drop back into cooperative position with the worm wheel and'the kee oer assume its functionin h 7 position automatically by the action of the spring rod 60 when released.

Onevendvof the small shaft 83 is free to raise and lower it being mounted within a slotted bearing 36 in one of the brackets 34 and upon the upper end of this bracket is pivotally mounted as at '37 a friction lever 38 which straddles the upper end of the bracket 34:, and its free end is held downwardly by the contractilespring rod 39, the lower end of which is hooked into one' of a number of suitable holes in the upstanding web of the body portion 1. This is for the purpose of keeping a downward stress upon this endof the shaft adjacent which and in close proximity to one arm of the frame 26 is mounted a combined gear wheel and sheave, the gear portion of which is indicated at 40 and the sheave at 4:1. This combined gear and sheave is loosely mounted upon the shaft 33, and, directly below 7 7 same,

meshing therewith and loosely mounted upon the shaft 22, is a similar combined gear wheel. and sheave, the gear and sheave members will be rotated simul- V taneously therewith. The ratloof speed of the tension sheaves to that of the drum is such as to constantly maintain tension upon the line intermediate of the sheaves and the. drum as it is wound off of-the latter, and this being essential in the successful operation of the machine, 'these sheaves are preferably sospeeded as to constantly tendto slip slightly on the line as they pull same. These combination gear and sheave members are for the reception of the free end 19 of the line therebetween, the same being in frictional contact simultaneously with both sheaves,'said contactbeing constantly maintained by the bearing down of the lever 38 upon the'shaftr33, as previously described. When the free end of the pulling line is thus constantly kept taut as it unwinds from the drum 18, a constant stress upon the line issecured during the winding operation;

In the mounting of the combined drum and wormwheel V1718, and associated parts, upon the shaft 6,.it is to be'understood that they are not directly mounted upon the shaft, as said shaft is surrounded by a tubular member or sleeve 56 which reachesentirely through the frame portion of the machine. To one end of the shaft 6 is keyed the spur gear 20, previously described, and, tocthe other end of the shaft is fixed the collar 47, for preventing cdislodgment of the-shaft 6 in respect to the frame structure, as the hub connection with the body portion -1 isillustrated at 48 and a like connection withthe' U-shaped leg m'ember 2 is illustrated at 49. f Y

The anchorage bridle of the machine is illustrated at50 it having spaced innermost ends which terminate in hub like portions indicated at 51, the sameJbeing mounted upon thesleeve 56 as is the other of the pulling members. The anchorage line is shown at 52.

Thus it is evident that the stress of the pulling line is brought upon the sleeve or tube 46in preference to the shaft 6, the latter being free to rotate within said sleeve and perform its thereof. 7 i

From the'foregoing it will be apparent that I have devised a very simpleand convenient pulling machine, and one in which a pulling line of any desired lengthmay be used as it passes continuously to and from the drum withoutbeing wo n 1P thereon;

function independently this being a great advantage in pulling a plurality of objects at different distances from the machine with one setting thereof.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent, is:

1. A portable pulling machine of the character described including a frame struc ture, two spaced rotatable shafts within said structure, a line pulling drum mounted about one of the shafts, a worm wheel for driving said drum and concentric there with, a worm pivotally mounted upon the other shaft and cooperatively engaged with the worm wheel, means intermediate of the two shafts whereby the operation of one operates the other, means intermediate of the second mentioned shaft and the worm whereby power and motion is imparted from said shaft to the worm, and an anchoringattachrnent, substantially as described.

2. A pulling machine of the character described comprising in combination a Vehicle, a winding drum mounted within the chassis of the'vehicle, a worm wheel rigidly fixed to one end of the winding drum, a power shaft axially supported through the drum and rotatable independently thereof, a counter shaft spaced horizontally from the power shaft and within the chassis, means whereby the counter shaft is operable simultaneously with the power shaft, an obliquely disposed worm pivotally mounted on the counter shaft and engageable with the worm wheel on the power shaft, said worm being optionally engageable with said worm wheel, and an anchoring attachment, substantially as described.

A pulling machine of the character described comprising in combination a vehicle, a winding drum mounted within the chassis of the vehicle, a worm wheel rigidly fixed to one end of the winding drum, a power shaft axially supported through the drum and rotatable independently thereof a counter shaft spaced horizontally from the power shaft and within the chassis, means whereby the counter-shaft is operable simultaneously with the power shaft, an obliquely disposed worm pivotally mounted on the counter shaft and engageable with the worm wheel on the power shaft, said worm being optionally engageable with said worm wheel, an anchoring attachment adjacent said drum, a line leading from the drum forwardly through said vehicle, and

means at the forward end of the vehicle for guiding said line.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOHN MARTINSON. 

